4 This file is part of systemd.
6 Copyright 2013 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
24 #include "cgroup-util.h"
25 #include "ip-address-access.h"
27 #include "time-util.h"
29 typedef struct CGroupContext CGroupContext
;
30 typedef struct CGroupDeviceAllow CGroupDeviceAllow
;
31 typedef struct CGroupIODeviceWeight CGroupIODeviceWeight
;
32 typedef struct CGroupIODeviceLimit CGroupIODeviceLimit
;
33 typedef struct CGroupBlockIODeviceWeight CGroupBlockIODeviceWeight
;
34 typedef struct CGroupBlockIODeviceBandwidth CGroupBlockIODeviceBandwidth
;
36 typedef enum CGroupDevicePolicy
{
38 /* When devices listed, will allow those, plus built-in ones,
39 if none are listed will allow everything. */
42 /* Everything forbidden, except built-in ones and listed ones. */
45 /* Everythings forbidden, except for the listed devices */
48 _CGROUP_DEVICE_POLICY_MAX
,
49 _CGROUP_DEVICE_POLICY_INVALID
= -1
52 struct CGroupDeviceAllow
{
53 LIST_FIELDS(CGroupDeviceAllow
, device_allow
);
60 struct CGroupIODeviceWeight
{
61 LIST_FIELDS(CGroupIODeviceWeight
, device_weights
);
66 struct CGroupIODeviceLimit
{
67 LIST_FIELDS(CGroupIODeviceLimit
, device_limits
);
69 uint64_t limits
[_CGROUP_IO_LIMIT_TYPE_MAX
];
72 struct CGroupBlockIODeviceWeight
{
73 LIST_FIELDS(CGroupBlockIODeviceWeight
, device_weights
);
78 struct CGroupBlockIODeviceBandwidth
{
79 LIST_FIELDS(CGroupBlockIODeviceBandwidth
, device_bandwidths
);
85 struct CGroupContext
{
88 bool blockio_accounting
;
89 bool memory_accounting
;
90 bool tasks_accounting
;
93 /* For unified hierarchy */
95 uint64_t startup_cpu_weight
;
96 usec_t cpu_quota_per_sec_usec
;
99 uint64_t startup_io_weight
;
100 LIST_HEAD(CGroupIODeviceWeight
, io_device_weights
);
101 LIST_HEAD(CGroupIODeviceLimit
, io_device_limits
);
104 uint64_t memory_high
;
106 uint64_t memory_swap_max
;
108 LIST_HEAD(IPAddressAccessItem
, ip_address_allow
);
109 LIST_HEAD(IPAddressAccessItem
, ip_address_deny
);
111 /* For legacy hierarchies */
113 uint64_t startup_cpu_shares
;
115 uint64_t blockio_weight
;
116 uint64_t startup_blockio_weight
;
117 LIST_HEAD(CGroupBlockIODeviceWeight
, blockio_device_weights
);
118 LIST_HEAD(CGroupBlockIODeviceBandwidth
, blockio_device_bandwidths
);
120 uint64_t memory_limit
;
122 CGroupDevicePolicy device_policy
;
123 LIST_HEAD(CGroupDeviceAllow
, device_allow
);
131 /* Used when querying IP accounting data */
132 typedef enum CGroupIPAccountingMetric
{
133 CGROUP_IP_INGRESS_BYTES
,
134 CGROUP_IP_INGRESS_PACKETS
,
135 CGROUP_IP_EGRESS_BYTES
,
136 CGROUP_IP_EGRESS_PACKETS
,
137 _CGROUP_IP_ACCOUNTING_METRIC_MAX
,
138 _CGROUP_IP_ACCOUNTING_METRIC_INVALID
= -1,
139 } CGroupIPAccountingMetric
;
143 void cgroup_context_init(CGroupContext
*c
);
144 void cgroup_context_done(CGroupContext
*c
);
145 void cgroup_context_dump(CGroupContext
*c
, FILE* f
, const char *prefix
);
147 CGroupMask
cgroup_context_get_mask(CGroupContext
*c
);
149 void cgroup_context_free_device_allow(CGroupContext
*c
, CGroupDeviceAllow
*a
);
150 void cgroup_context_free_io_device_weight(CGroupContext
*c
, CGroupIODeviceWeight
*w
);
151 void cgroup_context_free_io_device_limit(CGroupContext
*c
, CGroupIODeviceLimit
*l
);
152 void cgroup_context_free_blockio_device_weight(CGroupContext
*c
, CGroupBlockIODeviceWeight
*w
);
153 void cgroup_context_free_blockio_device_bandwidth(CGroupContext
*c
, CGroupBlockIODeviceBandwidth
*b
);
155 CGroupMask
unit_get_own_mask(Unit
*u
);
156 CGroupMask
unit_get_siblings_mask(Unit
*u
);
157 CGroupMask
unit_get_members_mask(Unit
*u
);
158 CGroupMask
unit_get_subtree_mask(Unit
*u
);
160 CGroupMask
unit_get_target_mask(Unit
*u
);
161 CGroupMask
unit_get_enable_mask(Unit
*u
);
163 bool unit_get_needs_bpf(Unit
*u
);
165 void unit_update_cgroup_members_masks(Unit
*u
);
167 char *unit_default_cgroup_path(Unit
*u
);
168 int unit_set_cgroup_path(Unit
*u
, const char *path
);
170 int unit_realize_cgroup(Unit
*u
);
171 void unit_release_cgroup(Unit
*u
);
172 void unit_prune_cgroup(Unit
*u
);
173 int unit_watch_cgroup(Unit
*u
);
175 int unit_attach_pids_to_cgroup(Unit
*u
);
177 int manager_setup_cgroup(Manager
*m
);
178 void manager_shutdown_cgroup(Manager
*m
, bool delete);
180 unsigned manager_dispatch_cgroup_queue(Manager
*m
);
182 Unit
*manager_get_unit_by_cgroup(Manager
*m
, const char *cgroup
);
183 Unit
*manager_get_unit_by_pid_cgroup(Manager
*m
, pid_t pid
);
184 Unit
* manager_get_unit_by_pid(Manager
*m
, pid_t pid
);
186 int unit_search_main_pid(Unit
*u
, pid_t
*ret
);
187 int unit_watch_all_pids(Unit
*u
);
189 int unit_get_memory_current(Unit
*u
, uint64_t *ret
);
190 int unit_get_tasks_current(Unit
*u
, uint64_t *ret
);
191 int unit_get_cpu_usage(Unit
*u
, nsec_t
*ret
);
192 int unit_get_ip_accounting(Unit
*u
, CGroupIPAccountingMetric metric
, uint64_t *ret
);
194 int unit_reset_cpu_accounting(Unit
*u
);
195 int unit_reset_ip_accounting(Unit
*u
);
197 bool unit_cgroup_delegate(Unit
*u
);
199 int unit_notify_cgroup_empty(Unit
*u
);
200 int manager_notify_cgroup_empty(Manager
*m
, const char *group
);
202 void unit_invalidate_cgroup(Unit
*u
, CGroupMask m
);
203 void unit_invalidate_cgroup_bpf(Unit
*u
);
205 void manager_invalidate_startup_units(Manager
*m
);
207 const char* cgroup_device_policy_to_string(CGroupDevicePolicy i
) _const_
;
208 CGroupDevicePolicy
cgroup_device_policy_from_string(const char *s
) _pure_
;